The Propeller incubator for social entrepreneurship is celebrating the latest class of startups to undergo its coaching program in a fundraising event on May 22. The theme of the soiree, called Propeller Pop, is pop-up businesses. An announcement says it will include "pop-up drinks, pop-up food from new local chefs" and a "pop-up light show."

The proceeds will support the the next round of the group's accelerator for entrepreneurs and services available to alumni of its programming. The 2013-14 class was the third cohort of entrepreneurs to undergo the training course at the incubator, which goes by the full name Propeller: A Force for Social Innovation.

The celebration is at the incubator in Broadmoor, 4035 N. Washington Ave. Tickets are $35 in advance, $40 at the door and $80 for admittance to a reception at 6 p.m., an hour before the main event starts. Tickets are available online.